Assertion (A) : To protect any instrument from external magnetic field, it is put inside an iron box Reason (R) : Iron is a ferromagnetic substance
Both A and R are true and R is not correct explanation of A
A is true, but R is false
Both A and R are true and R is the correct explanation of A
A is false, but R is true
A
Both A and R are true and R is not correct explanation of A
B
Both A and R are true and R is the correct explanation of A
C
A is true, but R is false
D
A is false, but R is true
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Solution
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To protect any instrument from external magnetic field it is put inside an iron box as iron is a ferromagnetic substance it will not get magnetize by the magnetic field due which there will not be any effect of magnetic field on the instrument.
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Assertion (A) : To protect any instrument from external magnetic field, it is put inside an iron box Reason (R) : Iron is a ferromagnetic substance
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